WO2004015870A1 - Procede et dispositif de verrouillage par injection d'oscillateurs a tension variable a l'aide de la syntonisation numerique directe - Google Patents

Procede et dispositif de verrouillage par injection d'oscillateurs a tension variable a l'aide de la syntonisation numerique directe Download PDF

Info

Publication number
WO2004015870A1
WO2004015870A1 PCT/CA2003/001204 CA0301204W WO2004015870A1 WO 2004015870 A1 WO2004015870 A1 WO 2004015870A1 CA 0301204 W CA0301204 W CA 0301204W WO 2004015870 A1 WO2004015870 A1 WO 2004015870A1
Authority
WO
WIPO (PCT)
Prior art keywords
vco
circuit
frequency
tuning
digital
Prior art date
Application number
PCT/CA2003/001204
Other languages
English (en)
Inventor
Christopher Andrew Devries
Ralph Dickson Mason
Original Assignee
Enq Semiconductor Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Enq Semiconductor Inc. filed Critical Enq Semiconductor Inc.
Priority to EP03783879A priority Critical patent/EP1535395B1/fr
Priority to JP2004526550A priority patent/JP4384036B2/ja
Priority to DE60316695T priority patent/DE60316695T2/de
Priority to AU2003258398A priority patent/AU2003258398A1/en
Priority to CA002493942A priority patent/CA2493942A1/fr
Publication of WO2004015870A1 publication Critical patent/WO2004015870A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/24—Automatic control of frequency or phase; Synchronisation using a reference signal directly applied to the generator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
    • H03B5/1212—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair
    • H03B5/1215—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair the current source or degeneration circuit being in common to both transistors of the pair, e.g. a cross-coupled long-tailed pair
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1228—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more field effect transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
    • H03B5/1243—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising voltage variable capacitance diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/20—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a harmonic phase-locked loop, i.e. a loop which can be locked to one of a number of harmonically related frequencies applied to it

Definitions

  • the invention relates to the field of electronics and more particularly to the tuning and injection locking of voltage controlled oscillators (VCOs).
  • VCOs voltage controlled oscillators
  • an oscillator is an electronic device used for the purpose of generating a signal.
  • Oscillators are found in computers, audio-frequency equipment, particularly music synthesizers, and wireless receivers and transmitters.
  • oscillators employ combinations of inductors, resistors, and/or capacitors to generate their operating frequency such as resistor-capacitor (RC) and inductor-capacitor (LC) oscillators.
  • RC resistor-capacitor
  • LC inductor-capacitor
  • the best stability is obtained in oscillators that use quartz crystals. When a direct current is applied to such a crystal, it vibrates at a frequency that depends on its thickness, and on the manner in which it is cut from the original mineral rock.
  • a voltage-controlled oscillator is a circuit that generates an oscillating signal at a frequency proportional to an externally applied voltage.
  • VCOs are often found in phase-locked loops (PLLs) used for, among other things, synchronizing an oscillation frequency to an external reference, or to a higher multiple or derivative of a crystal reference.
  • PLLs phase-locked loops
  • the goal is to recreate a clock signal synchronous to that which was used to generate a data stream.
  • the goal is to generate a higher frequency signal that has the phase noise properties of a low frequency reference.
  • the phase noise of a VCO is generally very poor and does not meet the need of many applications. It is also unpredictable in terms of it's nominal frequency and drift.
  • the crystal on the other hand is much more exact and has better phase noise.
  • RF radio frequency
  • a PLL is used to generate a high radio frequency (RF) using a lower frequency crystal oscillator as a reference.
  • Figure 1 depicts a block diagram of a frequency tuning circuit including a
  • the circuit consists of an oscillator 20 or external reference clock, a phase detector 22, a low-pass filter 24, a gain stage 26, a VCO 28 and a divider 29 configured in a loop.
  • the phase detector is a circuit that normally has an output voltage with an average value proportional to the phase difference between the input signal from oscillator 20 and the output of VCO 28.
  • the low-pass filter 24 is used to extract the average value from the output of the phase detector 22. The average value is then amplified and used to drive the VCO 28.
  • the divider 29 transforms the high frequency Vosc into a low frequency Vosc.
  • the negative feedback of the loop results in the output of the VCO 28 being synchronized or locked with the input signal from oscillator 20.
  • any slight change in the input signal first appears as a change in phase between the input signal and the VCO frequency.
  • the phase shift then acts as an error signal to change the VCO frequency to match the input signal.
  • the purpose of the phase detector 12 is to produce and output which represents how far the frequency produced in VCO 18 is from that of the input signal. Comparing these frequencies and producing an error signal proportional to their difference allows the VCO frequency to shift and become the same frequency as the input signal.
  • An alternate to PLL is injection locking which does not require the design of a high frequency phase detector or divider circuitry.
  • the process of injection locking is a fundamental property of oscillators, in that it can be observed in a wide variety of oscillator types with the same qualitative behaviour observed in each case.
  • an oscillator e.g. a VCO
  • f 0 free-running frequency
  • the oscillator will lock to and track the injected signal frequency over f 0 +/- LBW/2, where LBW is the locking bandwidth.
  • the process can be modeled as a true first-order PLL which implies that the loop is unconditionally stable and that the phase noise of the output tracks the phase noise of the injected clock over a wide bandwidth.
  • the locking bandwidth increases for larger injection amplitudes.
  • typical radio frequency (RF) applications require an LBW of 25 - 50 M Hz greater than the signal bandwidth.
  • RF radio frequency
  • achieving this LBW typically requires a large injection signal power, which is undesirable in certain applications such as integrated (as opposed to discrete) circuits.
  • the ability to determine the oscillation frequency of the VCO using a digital circuit would be advantageous. In particular, in an integrated circuit environment, the ability to eliminate off-chip components and to reduce the overall chip area is desirable.
  • an improved injection locking circuit which allows the VCO to injection lock with a smaller LBW and associated lower signal power.
  • the free running oscillator frequency is close to the injection harmonic, independent of process and environmental variation, the required LBW is greatly reduced.
  • the injection power and associated power dissipation is also reduced.
  • the signal processing capabilities of digital circuits is used to determine the oscillation frequency of the VCO without requiring extensive additional circuitry.
  • this invention includes a pre-tuning algorithm to place the VCO frequency such that the desired frequency is in the desired LBW.
  • Tuning of the VCO is achieved using direct digital tuning that does not require an input reference. Injection locking is performed using a low frequency clock harmonic as the reference signal.
  • the output signal of the VCO is sub-sampled and digitized, the center frequency determined and the VCO control voltage adjusted.
  • the VCO output can be further sub-sampled and digitally tuned so that it is within the LBW of a reference signal.
  • VCO voltage controlled oscillator
  • the step of digitally pre-tuning comprises the steps of: digitizing the VCO output; determining the VCO output frequency; adjusting the VCO output frequency; and repeating the steps of digitizing, determining and adjusting until a desired oscillation frequency is reached.
  • a circuit for digitally pre-tuning and injection locking a voltage controlled oscillator (VCO) comprising: a reference oscillator for producing a reference input signal; a VCO electrically connected to said reference oscillator; and a feedback circuit electrically connected to said VCO for digitally pre-tuning said VCO and receiving a reference.
  • VCO voltage controlled oscillator
  • the feedback circuit comprises an analogue-to-digital (ADC), microcontroller and a digital-to-analogue converter (DAC), wherein a control signal is produced in the microcontroller and injected into the VCO.
  • ADC analogue-to-digital
  • DAC digital-to-analogue converter
  • a low power oscillator incorporating injection locking with direct digital tuning is provided with improved locking range.
  • Figure 1 depicts a block diagram of an oscillator circuit including a PLL with VCO circuit in accordance with the prior art
  • FIG. 2 depicts a block diagram of the VCO tuning and injection locking system in accordance with the present invention
  • FIG. 3 depicts an example VCO circuit with injection input port in accordance with the present invention.
  • FIG. 4 a flow diagram of the tuning and injection locking process in accordance with the present invention. DESCRIPTION OF THE PREFERRED EMBODIMENT
  • the present invention arises from the realization that the signal processing capabilities of digital circuits, such as those commonly employed in radio transceiver circuits, may be used to determine the oscillation frequency of a VCO without requiring extensive additional circuitry.
  • the tuning of the VCO 30 is accomplished in the digital domain and involves three main components: analogue-to-digital converter (ADC) 38, digital microcontroller 42 and digital-to-analogue (DAC) converter.
  • ADC analogue-to-digital converter
  • DAC digital-to-analogue
  • reference signal 32 normally inputted to VCO 30 from the reference crystal oscillator 34 is turned off.
  • Pre-tuning is performed by first sub- sampling VCO output 36 is first sub-sampled by ADC 38.
  • the sub-sampled signal 40 is then processed in the digital domain using digital microcontroller 42 where the center frequency (f c ) of the VCO 30 is determined.
  • f c center frequency
  • f c can be determined by performing a Fast Fourier Transformation (FFT) of the sampled data, removing the narrow band desired signal and any other interfering signals, smoothing the amplified noise if necessary and finding the peak of the resultant frequency response.
  • FFT Fast Fourier Transformation
  • a more efficient approach is to replace the FFT with a digital down-conversion stage.
  • the resulting phase shift from one sample to the next can be measured to calculate the frequency, f c of the VCO 30.
  • the VCO frequency is determined it is adjusted by generating digital control signals 44 that are converted to analog signals 46 using DAC 48. This feedback process involving the ADC 38, microprocessor 42 and DAC 48 is continuously repeated until the desired VCO frequency is reached.
  • VCO 30 By pre-tuning VCO 30 so that its oscillation frequency f c is close to the desired frequency, the required LBW is reduced significantly. A reduction in the LBW reduces the required power of reference signal 32. This allows a lower frequency reference signal with significant higher harmonics to be used as the reference signal.
  • a low frequency crystal oscillator is used to injection lock an RF VCO with the N th harmonic, where N is the result of dividing the VCO frequency with the fundamental crystal frequency.
  • the input to the VCO 30 is turned on, allowing the reference signal 32 to be injected into VCO 30.
  • the reference signal 32 takes the form of a crystal oscillator 34 whose high frequency harmonics contain one such harmonic at the desired oscillation frequency for the VCO.
  • the VCO is tuned close enough to this desired oscillation frequency to allow injection locking. Once the reference signal is applied, the VCO remains locked to the harmonic of the crystal oscillator.
  • FIG. 3 depicts a sample circuit diagram used in the preferred embodiment of VCO 30.
  • the tank circuit of the VCO is comprised of inductors 48 and variable capacitors 50.
  • a tank circuit is a parallel resonator circuit comprised of an inductor, a capacitor and an optional resistor. Since the capacitor and the inductor both store energy, it is commonly referred to as a tank circuit.
  • variable capacitors 50 could be replaced with a set of switched capacitor banks.
  • variable capacitors 50 have a control voltage 52 that is adjusted by the digital-to-analog converter 48.
  • the losses in the tank circuit are cancelled by the negative impedance created by a differential pair of transistors 54. This creates the condition for oscillation.
  • the input differential pair of transistors 56 converts the input reference to a current. The current is injected into the tank circuit of the VCO 30 (i.e. added to the current signal of the oscillator tank circuit).
  • FIG. 4 is a flow diagram of the tuning and injection process in operation.
  • the VCO When the VCO is initially powered up 100, the VCO oscillates 110 and the output is sub-sampled 120. The oscillation frequency, f c is determined 130 in the digital domain. Next, a test is performed 140 to see if f c is within the predetermined LBW range. If f c is correct then the tuning cycle is complete, the input to the VCO is turned on 150 and the VCO is injection locked to the reference signal 160. If f c is not correct then the control signal is adjusted 170 and the tuning process is repeated.
  • the above description of the preferred embodiment utilizes direct digitization of the VCO signal.
  • sub-sampling of the VCO output is a good method for digitizing a narrow-band high frequency signal but the step of digitizing could also be accomplished by mixing down to an intermediate frequency (IF) and then digitizing with the ADC by sampling or sub-sampling.
  • IF intermediate frequency
  • This alternate embodiment is also meant to be included within the scope of the invention.
  • the preferred embodiment uses digital circuitry to determine the oscillation frequency of the VCO.
  • the present invention is not limited to this embodiment.
  • Other circuits can be construed that would be capable of determining the oscillation frequency of the VCO using analog circuitry.
  • This analog circuitry in turn could be used to adjust the frequency of the VCO until it is within the LBW of the desired signal and the injection locking is then turned on.
  • a microcontroller for processing the sub-sampled VCO output signal within the digital domain.
  • a microcontroller is usually embedded into some other device (e.g. a radio transceiver) and typically includes: (a) a central processing unit (CPU) that executes software programs; (b) Random Access Memory (RAM); (c) Erasable Programmable Read Only Memory (EPROM); (d) serial and parallel I/O; (e) timers; and (f) an interrupt controller.
  • the processing could be equally accomplished by the use of pure digital circuitry designed to perform the functions described in relation to Figure 2 (e.g. performing an FFT).
  • the present invention relates to an injection locking circuit incorporating direct digital tuning.
  • the circuit described herein can be produced in discrete or integrated circuit form and may be used in combination with other components to perform a specified analogue or digital function in, for example, a radio transceiver. It is to be understood by the reader that a variety of other implementations may be devised by skilled persons and the claimed invention herein is intended to encompass all such alternative implementations, substitutions and equivalents. Persons skilled in the field of electronic circuit design will be readily able to apply the present invention to an appropriate implementation for a given application. For example, other types of VCOs or tuning algorithms could be used.

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

Cette invention relève du domaine de l'électronique et concerne en particulier la syntonisation et le verrouillage par injection d'oscillateurs à tension variable (VCO). Un circuit perfectionné de verrouillage par injection est utilisé pour permettre à l'oscillateur à tension variable d'être verrouillé par injection avec un signal de référence plus petit et par conséquent une largeur de bande de verrouillage (LBW) plus petite. Pour permettre à l'oscillateur à tension variable d'être verrouillé par injection avec un signal de référence de plus faible puissance, cette invention comprend une étape de pré-syntonisation permettant à la fréquence de l'oscillateur à tension variable d'être établie de telle sorte que la fréquence souhaitée soit dans la largeur de bande de verrouillage. La syntonisation de l'oscillateur à tension variable est réalisée à l'aide d'une syntonisation numérique directe qui ne nécessite pas de référence d'entrée. Le verrouillage par injection est effectué à l'aide d'une harmonique d'horloge basse fréquence servant de signal de référence. De manière plus spécifique, la syntonisation est accomplie selon un procédé consistant à sous-échantillonner et numériser le signal de sortie de l'oscillateur à tension variable, à déterminer la fréquence centrale et à ajuster la tension de commande de l'oscillateur à tension variable.
PCT/CA2003/001204 2002-08-12 2003-08-11 Procede et dispositif de verrouillage par injection d'oscillateurs a tension variable a l'aide de la syntonisation numerique directe WO2004015870A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP03783879A EP1535395B1 (fr) 2002-08-12 2003-08-11 Procede et dispositif de verrouillage par injection d'oscillateurs a tension variable a l'aide de la syntonisation numerique directe
JP2004526550A JP4384036B2 (ja) 2002-08-12 2003-08-11 直接ディジタルチューニングを使用する電圧制御発振器の注入ロックのための方法と装置
DE60316695T DE60316695T2 (de) 2002-08-12 2003-08-11 Verfahren und einrichtung zur einspeisung der verriegelung von spannungsgesteuerten oszillatoren mit direkter digitaler abstimmung
AU2003258398A AU2003258398A1 (en) 2002-08-12 2003-08-11 Method and device for injection locking of voltage controlled oscillators using direct digital tuning
CA002493942A CA2493942A1 (fr) 2002-08-12 2003-08-11 Procede et dispositif de verrouillage par injection d'oscillateurs a tension variable a l'aide de la syntonisation numerique directe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,395,891 2002-08-12
CA002395891A CA2395891A1 (fr) 2002-08-12 2002-08-12 Verrouillage par injection au moyen de l'accord numerique direct

Publications (1)

Publication Number Publication Date
WO2004015870A1 true WO2004015870A1 (fr) 2004-02-19

Family

ID=31501574

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2003/001204 WO2004015870A1 (fr) 2002-08-12 2003-08-11 Procede et dispositif de verrouillage par injection d'oscillateurs a tension variable a l'aide de la syntonisation numerique directe

Country Status (11)

Country Link
US (1) US6963249B2 (fr)
EP (1) EP1535395B1 (fr)
JP (1) JP4384036B2 (fr)
KR (1) KR101018585B1 (fr)
CN (1) CN100530973C (fr)
AT (1) ATE375030T1 (fr)
AU (1) AU2003258398A1 (fr)
CA (1) CA2395891A1 (fr)
DE (1) DE60316695T2 (fr)
ES (1) ES2295673T3 (fr)
WO (1) WO2004015870A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1994644A1 (fr) * 2006-03-13 2008-11-26 Kleer Semiconductor Corporation Architecture de récepteur rf-bande de base
US9099956B2 (en) 2011-04-26 2015-08-04 King Abdulaziz City For Science And Technology Injection locking based power amplifier

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7808327B2 (en) * 2006-08-07 2010-10-05 Texas Instruments Incorporated Method and apparatus to provide digitally controlled crystal oscillators
WO2008144152A1 (fr) * 2007-05-22 2008-11-27 Rambus Inc. Multiplicateur d'horloge verrouillé par injection
KR100983032B1 (ko) 2008-03-13 2010-09-17 삼성전기주식회사 Ｇｍ-Ｃ 필터의 디지털 튜닝 회로
US20100085123A1 (en) * 2008-04-22 2010-04-08 Rambus Inc. Injection-locked clock multiplier
US8831073B2 (en) 2009-08-31 2014-09-09 Sony Corporation Wireless transmission system, wireless communication device, and wireless communication method
EP2550741B1 (fr) * 2010-03-24 2015-01-14 Greenpeak Technologies B.V. Emetteur-récepteur comprenant une boucle verrouillée en fréquence sous-échantillonnée
GB2483898B (en) * 2010-09-24 2015-07-22 Cambridge Silicon Radio Ltd Injection-locked oscillator
CN102176677B (zh) * 2011-02-11 2015-09-16 中兴通讯股份有限公司 转换器及信号转换方法
US8975973B2 (en) 2011-03-24 2015-03-10 Panasonic Corporation Oscillation frequency adjusting apparatus, oscillation frequency adjusting method, and wireless communication apparatus
US8704603B2 (en) * 2011-04-13 2014-04-22 Qualcomm Incorporated Low power wideband LO using tuned injection locked oscillator
JP5701149B2 (ja) * 2011-05-24 2015-04-15 三菱電機株式会社 高周波発振源
US9024696B2 (en) 2013-03-15 2015-05-05 Innophase Inc. Digitally controlled injection locked oscillator
US9264282B2 (en) 2013-03-15 2016-02-16 Innophase, Inc. Polar receiver signal processing apparatus and methods
CN102624366A (zh) * 2012-04-13 2012-08-01 复旦大学 多能量注入锁定的高功率输出旋转行波振荡器
US9445729B2 (en) * 2012-07-20 2016-09-20 Resmed Sensor Technologies Limited Range gated radio frequency physiology sensor
CN102938633B (zh) * 2012-10-24 2016-12-21 深圳市同洲电子股份有限公司 一种晶振干扰的控制方法及装置
US9083588B1 (en) 2013-03-15 2015-07-14 Innophase, Inc. Polar receiver with adjustable delay and signal processing metho
CN104105293A (zh) * 2013-04-15 2014-10-15 阮树成 直流低压电源四推挽注锁功率合成无极灯组
CN104105324A (zh) * 2013-04-15 2014-10-15 张妙娟 直流低压电源四推注锁功率合成荧光灯组
CN104105327A (zh) * 2013-04-15 2014-10-15 阮小青 太阳能电源双推注锁功率合成无极灯
CN103580686B (zh) * 2013-10-29 2016-07-06 中国电子科技集团公司第四十一研究所 用于宽带高性能频率合成器的振荡器预调谐电路及方法
JP6273871B2 (ja) * 2014-02-03 2018-02-07 国立大学法人電気通信大学 最適波形の演算方法、プログラム及び最適波形演算装置
US9270289B2 (en) * 2014-02-13 2016-02-23 Fujitsu Limited Monolithic signal generation for injection locking
CN104184484B (zh) * 2014-08-06 2016-10-05 杭州电子科技大学 一种注入锁定振荡器及无线接收射频前端
US9497055B2 (en) 2015-02-27 2016-11-15 Innophase Inc. Method and apparatus for polar receiver with digital demodulation
US10158509B2 (en) 2015-09-23 2018-12-18 Innophase Inc. Method and apparatus for polar receiver with phase-amplitude alignment
US9673828B1 (en) 2015-12-02 2017-06-06 Innophase, Inc. Wideband polar receiver architecture and signal processing methods
US9673829B1 (en) 2015-12-02 2017-06-06 Innophase, Inc. Wideband polar receiver architecture and signal processing methods
US9787466B2 (en) * 2016-03-09 2017-10-10 Ciena Corporation High order hybrid phase locked loop with digital scheme for jitter suppression
CN106533435A (zh) * 2016-09-29 2017-03-22 中国电子科技集团公司第二十九研究所 一种用一个n点复数fft计算2n实序列的方法及系统
JP2018107745A (ja) 2016-12-28 2018-07-05 ソニーセミコンダクタソリューションズ株式会社 Ｄａｃ及び発振回路
US10122397B2 (en) 2017-03-28 2018-11-06 Innophase, Inc. Polar receiver system and method for Bluetooth communications
US10108148B1 (en) 2017-04-14 2018-10-23 Innophase Inc. Time to digital converter with increased range and sensitivity
US10503122B2 (en) 2017-04-14 2019-12-10 Innophase, Inc. Time to digital converter with increased range and sensitivity
US10063367B1 (en) 2017-04-28 2018-08-28 Ciena Corporation Optical clock recovery using feedback phase rotator with non-linear compensation
US10281523B2 (en) 2017-09-19 2019-05-07 Ciena Corporation Techniques and circuits for on-chip jitter and phase noise measurement in a digital test environment
US10622959B2 (en) 2018-09-07 2020-04-14 Innophase Inc. Multi-stage LNA with reduced mutual coupling
US10840921B2 (en) 2018-09-07 2020-11-17 Innophase Inc. Frequency control word linearization for an oscillator
US11095296B2 (en) 2018-09-07 2021-08-17 Innophase, Inc. Phase modulator having fractional sample interval timing skew for frequency control input
FR3086131B1 (fr) * 2018-09-14 2021-06-04 Commissariat Energie Atomique Dispositif de reglage du verrouillage d'un multiplicateur de frequence a verrouillage par injection
DE102018216614A1 (de) * 2018-09-27 2020-04-02 Infineon Technologies Ag Kalibrieren eines injektionssynchronisierten oszillators
EP3878100A1 (fr) 2018-11-08 2021-09-15 Telefonaktiebolaget Lm Ericsson (Publ) Un générateur de signal à synthèse numérique directe et filtre de suivi
KR102644945B1 (ko) * 2018-12-14 2024-03-08 삼성전자주식회사 클럭 주파수 공급 장치 및 방법
WO2020146408A1 (fr) 2019-01-07 2020-07-16 Innophase, Inc. Utilisation d'un signal multi-tons permettant d'accorder un amplificateur à faible bruit multi-étage
US10728851B1 (en) 2019-01-07 2020-07-28 Innophase Inc. System and method for low-power wireless beacon monitor
DE102019208369A1 (de) 2019-06-07 2020-12-10 Infineon Technologies Ag Bestimmung der Synchronisierung des Ausgangssignals eines injektionssynchronisierten Oszillators mit einem Injektionssignal
US10797713B1 (en) * 2019-08-12 2020-10-06 Realtek Semiconductor Corp. High-speed high-resolution digitally-controlled oscillator and method thereof
FR3104858B1 (fr) * 2019-12-11 2023-01-06 Commissariat A Lenergie Atomique Et Aux Energies Now Alternatives Filtre passe-bande

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0395860A2 (fr) * 1989-05-01 1990-11-07 Motorola, Inc. Démodulator FM
US5257294A (en) * 1990-11-13 1993-10-26 National Semiconductor Corporation Phase-locked loop circuit and method
US5821818A (en) * 1995-11-29 1998-10-13 International Business Machines Corporation Phase locked loop ciruit for a liquid crystal display
US5974098A (en) * 1994-09-12 1999-10-26 Nec Corporation Received signal detector for digital demodulator
EP1011198A2 (fr) * 1998-12-11 2000-06-21 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Boucle à verrouillage de phase
EP1213840A1 (fr) * 2000-12-07 2002-06-12 Nokia Corporation Emetteur-récepteur comprenant un circuit de boucle à verrouillage de phase
US20020070815A1 (en) * 2000-12-08 2002-06-13 Johann Traub Oscillator circuit
EP1229655A2 (fr) * 2001-01-30 2002-08-07 Marconi Mobile SpA Dispositif à boucle d'asservissement de phase

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5394117A (en) * 1993-05-28 1995-02-28 Ail Systems, Inc. Direct digital synthesizer-based injection locked oscillator
US6121847A (en) * 1998-03-16 2000-09-19 Broadband Innovations, Inc. Injection locked oscillator automatic frequency centering method and apparatus
CA2357491A1 (fr) 2001-09-17 2003-03-17 Ralph Mason Methode pour accorder un filtre par un sous-echantillonnage direct

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0395860A2 (fr) * 1989-05-01 1990-11-07 Motorola, Inc. Démodulator FM
US5257294A (en) * 1990-11-13 1993-10-26 National Semiconductor Corporation Phase-locked loop circuit and method
US5974098A (en) * 1994-09-12 1999-10-26 Nec Corporation Received signal detector for digital demodulator
US5821818A (en) * 1995-11-29 1998-10-13 International Business Machines Corporation Phase locked loop ciruit for a liquid crystal display
EP1011198A2 (fr) * 1998-12-11 2000-06-21 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Boucle à verrouillage de phase
EP1213840A1 (fr) * 2000-12-07 2002-06-12 Nokia Corporation Emetteur-récepteur comprenant un circuit de boucle à verrouillage de phase
US20020070815A1 (en) * 2000-12-08 2002-06-13 Johann Traub Oscillator circuit
EP1229655A2 (fr) * 2001-01-30 2002-08-07 Marconi Mobile SpA Dispositif à boucle d'asservissement de phase

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
C. SAMORI, A. L. LACAITA, A. ZANCHI, S. LEVANTINO, G. CALI: "Phase Noise Degradation at High Oscillation Amplitudes in LC-Tuned VCO's", IEEE JOURNAL OF SOLID-STATE CIRCUITS, vol. 35, no. 1, 1 January 2000 (2000-01-01), pages 96 - 99, XP000950393 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1994644A1 (fr) * 2006-03-13 2008-11-26 Kleer Semiconductor Corporation Architecture de récepteur rf-bande de base
EP1994644A4 (fr) * 2006-03-13 2014-01-01 Smsc Holdings Sarl Architecture de récepteur rf-bande de base
US9099956B2 (en) 2011-04-26 2015-08-04 King Abdulaziz City For Science And Technology Injection locking based power amplifier

Also Published As

Publication number Publication date
JP2005536095A (ja) 2005-11-24
KR20050071470A (ko) 2005-07-07
AU2003258398A1 (en) 2004-02-25
CA2395891A1 (fr) 2004-02-12
CN100530973C (zh) 2009-08-19
ES2295673T3 (es) 2008-04-16
US20040036538A1 (en) 2004-02-26
DE60316695T2 (de) 2008-06-05
CN1675841A (zh) 2005-09-28
DE60316695D1 (de) 2007-11-15
ATE375030T1 (de) 2007-10-15
EP1535395B1 (fr) 2007-10-03
US6963249B2 (en) 2005-11-08
JP4384036B2 (ja) 2009-12-16
KR101018585B1 (ko) 2011-03-04
EP1535395A1 (fr) 2005-06-01

Similar Documents

Publication Publication Date Title
US6963249B2 (en) Injection locking using direct digital tuning
Yang et al. A 7.1 mW, 10 GHz all digital frequency synthesizer with dynamically reconfigured digital loop filter in 90 nm CMOS technology
TWI279085B (en) All-digital phase-locked loop
US20060071728A1 (en) Temperature compensated crystal oscillator
Herzel et al. Phase noise modeling for integrated PLLs in FMCW radar
JP2002033660A (ja) デジタル制御発信器同調入力をタイムディザリングするシステムおよび方法
EP0841754A3 (fr) Oscillateur contrÔlé numériquement
Mendel et al. A z-domain model and analysis of phase-domain all-digital phase-locked loops
Rohde Frequency Synthesizer
CA2493942A1 (fr) Procede et dispositif de verrouillage par injection d'oscillateurs a tension variable a l'aide de la syntonisation numerique directe
US20190036536A1 (en) A Detector Circuit
EP0203756A2 (fr) Synthétiseurs de fréquence
US20070237277A1 (en) Method and Integrated Circuit for Controlling an Oscillator Signal
Zhao et al. A 2.4-GHz Crystal-Less GFSK Receiver Using an Auxiliary Multiphase BBPLL for Digital Output Demodulation With Enhanced Frequency Scaling
JP3250484B2 (ja) 電圧制御発振回路
JP3221579B2 (ja) 電圧制御発振器を用いたｐｌｌ回路
Nanda A novel error detection strategy for a low power low noise all-digital phase-locked loop
Ghai et al. All-digital phase locked loop (adpll)-a review
Saber et al. Design and Implementation of Low Ripple Low Power Digital Phase-Locked Loop
Saber et al. Low noise-low power digital phase-locked loop
Kostak et al. Discrete Time Analysis of Phase Detector Linear Range Extension in Sub-Sampling PLL
AL SHARI et al. FREQUENCY APPLICATION USING DIGITAL PHASE LOCKED LOOP
Sulaiman Design and analysis of a second order phase locked loops (PLLs)
KR100918977B1 (ko) 스위프 장치
Hsieh et al. A bandwidth tracking technique for a 65nm CMOS digital phase-locked loop

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2003783879

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2493942

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 20038189968

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 1020057002218

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 2004526550

Country of ref document: JP

WWP Wipo information: published in national office

Ref document number: 2003783879

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1020057002218

Country of ref document: KR

WWG Wipo information: grant in national office

Ref document number: 2003783879

Country of ref document: EP